Plum or pear (4)

I believe this is a double definition.
'plum' is the first definition.
(thesaurus)
'pear' is the second definition.
(thesaurus)
(Other definitions for tree that I've seen before include "Ash, chestnut, or araucaria, for example" , "Genealogist's graphic" , "Plane possibly" , "box, possibly" , "Woody growth" .)
I believe this clue is a double definition.
'plum' is the first definition.
(thesaurus)
'pear' is the second definition.
(thesaurus)
(Other definitions for fruit that I've seen before include "Eg, apple or pear" , "Eg, banana or apple" , "Oranges and lemons" , "Greengrocer's produce" , "Kiwi, mandarin etc" .)